[src/trunk]: src/sys/external/bsd/drm2/include/linux linux: Make xchg and cmp...

[riastradh <riastradh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/8f25ec4f3dbe
branches:  trunk
changeset: 1028610:8f25ec4f3dbe
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Sun Dec 19 11:26:42 2021 +0000

description:
linux: Make xchg and cmpxchg work on pointers too.

diffstat:

 sys/external/bsd/drm2/include/linux/atomic.h |  14 +++++++++-----
 1 files changed, 9 insertions(+), 5 deletions(-)

diffs (31 lines):

diff -r 06e9833e757c -r 8f25ec4f3dbe sys/external/bsd/drm2/include/linux/atomic.h
--- a/sys/external/bsd/drm2/include/linux/atomic.h      Sun Dec 19 11:26:35 2021 +0000
+++ b/sys/external/bsd/drm2/include/linux/atomic.h      Sun Dec 19 11:26:42 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: atomic.h,v 1.37 2021/12/19 11:16:00 riastradh Exp $    */
+/*     $NetBSD: atomic.h,v 1.38 2021/12/19 11:26:42 riastradh Exp $    */
 
 /*-
  * Copyright (c) 2013 The NetBSD Foundation, Inc.
@@ -39,13 +39,17 @@
 #include <asm/barrier.h>
 
 #define        xchg(P, V)                                                            \
-       (sizeof(*(P)) == 4 ? atomic_swap_32((volatile uint32_t *)P, V)        \
-           : sizeof(*(P)) == 8 ? atomic_swap_64((volatile uint64_t *)P, V)   \
+       (sizeof(*(P)) == 4 ? atomic_swap_32((volatile uint32_t *)(P),         \
+               (uint32_t)(V))                                                \
+           : sizeof(*(P)) == 8 ? atomic_swap_64((volatile uint64_t *)(P),    \
+               (uint64_t)(V))                                                \
            : (__builtin_abort(), 0))
 
 #define        cmpxchg(P, O, N)                                                      \
-       (sizeof(*(P)) == 4 ? atomic_cas_32((volatile uint32_t *)P, O, N)      \
-           : sizeof(*(P)) == 8 ? atomic_cas_64((volatile uint64_t *)P, O, N) \
+       (sizeof(*(P)) == 4 ? atomic_cas_32((volatile uint32_t *)(P),          \
+               (uint32_t)(O), (uint32_t)(N))                                 \
+           : sizeof(*(P)) == 8 ? atomic_cas_64((volatile uint64_t *)(P),     \
+               (uint64_t)(O), (uint64_t)(N))                                 \
            : (__builtin_abort(), 0))
 
 /*